Alternatives to Fiddler for all platforms with any license

  • Postman icon


    Postman helps you be more efficient while working with APIs. Postman is a scratch-your-own-itch project. The need for it arose while...

    Freemium Mac Web / Cloud Chrome OS

  • mitmproxy icon


    mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP. It provides a console interface that allows traffic flows to be...

    Open Source Mac Linux

  • Charles icon


    Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic...

    Commercial Mac Windows Linux

  • SHODAN icon


    SHODAN is a search engine that lets you find specific computers (routers, servers, etc.) using a variety of filters. Some have also...

    Free Web / Cloud

  • Zed Attack Proxy icon

    Zed Attack Proxy

    The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It...

    Open Source Mac Windows Linux

  • NetworkMiner icon


    NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can be used as a passive network sniffer/packet...

    Freemium Windows

  • Burp Proxy icon

    Burp Proxy

    Burp Proxy is an interactive HTTP/S proxy server for attacking and testing web applications. It operates as a man-in-the-middle...

    Freemium Mac Windows Linux

  • Live HTTP Headers icon

    Live HTTP Headers

    The goal of this project is to adds information about the HTTP headers in three ways: First by adding a 'Headers' tab in...

    Free Mac Windows Linux Firefox

  • SmartSniff icon


    SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers....

    Free Windows

  • StopLight icon


    APIs are essential to every online business. StopLight helps companies manage their API lifecycle. Our visual modeling solution...

    Free Personal Mac Windows

  • Live HTTP Headers (Chrome) icon

    Live HTTP Headers (Chrome)

    Monitor all HTTP/HTTPs traffic from your browser. Live HTTP Headers logs all HTTP traffic between Google Chrome and the Internet. ...

    Free Mac Windows Linux Chrome

  • icon

    App and device communication diagnostics tool for better bug tracking & QA. An easy-to-use tool that monitors http, BLE and...

    Freemium iPhone iPad

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  • Andiparos icon

    Andiparos Discontinued

    Andiparos is a fork of the famous Paros Proxy. It is an open source web application security assessment tool that gives penetration...

    Open Source Mac Windows Linux

  • Advanced REST Client icon

    Advanced REST Client

    The web developers helper program to create and test custom HTTP requests. Advanced REST client for Google Chrome.

    Open Source Chrome OS Chrome Chromium Chrome Web Store

  • HttpWatch icon


    HttpWatch is an HTTP viewer and debugger that integrates with IE and Firefox to provide seamless HTTP and HTTPS monitoring without...

    Free Personal Windows Firefox

  • HTTP Headers icon

    HTTP Headers

    HTTP Headers allows you to quickly see the HTTP header information for the current URL.

    Free Mac Windows Linux

  • Graphical HTTP Client icon

    Graphical HTTP Client

    HTTP Client is a Mac OS X Leopard developer tool for debugging HTTP services by graphically creating and inspecting complex HTTP...

    Commercial Mac

  • LANGuardian icon


    LANGuardian is the first and only deep packet inspection (DPI) software to provide SMB network managers with root cause information...

    Commercial Mac Windows Linux

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  • icon is the perfect tool for debugging and analysing both HTTP requests and responses and modify data in transit. It can be used...

    Commercial Mac

  • HttpRequester icon


    A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

    Open Source Mac Windows Linux Firefox

  • HTTP Analyzer

    HTTP Analyzer is such a handy tool that allows you to monitor, trace, debug and analyze HTTP/HTTPS traffic in real-time. It is used by...

    Commercial Windows

  • HTTP Debugger icon

    HTTP Debugger

    HTTP Debugger Pro - A Professional HTTP Sniffer and Analyzer for Developers

    Commercial Windows

  • HttpFox icon


    HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers. It aims to bring the...

    Free Mac Windows Linux Firefox

  • Pirni Pro icon

    Pirni Pro

    Pirni Pro is a network security tool designed for iOS, and specifically for iPhone and iPod Touch devices. It is capable of...

    Commercial iPhone

  • AppScope icon


    AppScope is a tool for networked mobile applications to instantly capture comprehensive bug reports containing screen video, network...

    Freemium Mac Android iPhone iPad

  • HTTPScoop icon

    HTTPScoop Discontinued

    HTTP Scoop is a Mac network sniffer that displays requests to websites along with the response, and makes it fairly easy to see...

    Commercial Mac

  • IEWatch icon


    IEWatch is a plug-in for Microsoft Internet Explorer that helps you achieve your web development and web analysis tasks more...

    Commercial Windows

  • Rest Client icon

    Rest Client

    Rest Client feature rich rest client for developers to debug and test their RESTful web services. It can be used to request a URL...

    Commercial Mac

  • GraphicalHttpClient icon


    Graphical Http Client is a utility to help you test and interact with REST-based web services. It is lightweight, easy-to-use, and has...

    Commercial Mac

  • RESTed icon


    RESTed allows developers to quickly format and make HTTP requests and view the response. RESTed supports both basic HTTP...

    Commercial Mac

  • HTTPNetworkSniffer icon


    Packet sniffer tool that captures all HTTP requests/responses sent between the Web browser and the Web server and displays them in a...

    Free Windows

  • WebSiteSniffer icon


    WebSiteSniffer is a packet sniffer tool that captures all Web site files downloaded by your Web browser while browsing the Internet...

    Free Windows

  • httpry

    httpry is a tool designed for displaying and logging HTTP traffic. It is not intended to perform analysis itself, but instead to...

    Open Source Linux

  • Cellist icon


    Cellist is a HTTP debugging proxy for OS X. ---How does it work?--- Cellist puts a proxy between HTTP clients and the Internet....

    Commercial Mac

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